Week 5 Blood Pressure Flashcards
1
Q
Blood Pressure
A
Is the force of blood pushing against the walls of the arteries as the heart pumps it around the body.
- Controlled by the cardiac output and peripheral vascular reisistance
2
Q
What are the factors on blood Pressure
A
- Pumping action of the heart
- Peripheral vascular resistance
- Blood volume
- Blood viscosity
- Venous Return
3
Q
What is it measure in Blood Pressure
A
- measured in millimetres of mercury mmHG
4
Q
Blood Pressure of a New born
A
40 (mean)
5
Q
Blood Pressure of a 1 year old
A
85/54
6
Q
Blood Pressure of a 6 year old
A
95/65
7
Q
Blood Pressure of 14-17 year old
A
120/75
8
Q
Blood Pressure of a middle adult
A
<120/80
9
Q
What is cardiac output
A
- how much volume of blood per min pumped
- heart rate and stroke volume
- increase in any of these increases the blood pressure
10
Q
Systolic blood pressure
A
- Maximum pressure of the blood against the wall of the artery
- Occurs during ventricular contraction
11
Q
Diastolic blood pressure
A
- The minimum pressure of blood against the wall of the artery
- Occurs during ventricular relaxation
12
Q
Normal pressure range systolic and diastolic ranges
A
Systolic : 90-120mmHg
Diastolic: 60-80mmHg
13
Q
Normal blood pressure and arterial pressure range
A
Blood Pressure: 120/80mmHg
Aterial Pressure: 70-100mmHg
14
Q
Mean Arterial Pressure (MAP)
A
- Average pressure throughout 1 cardiac cycle: systole and diatom
- 2/3 diastolic pressure + 1/3 systolic pressure
- Indication of overall perfusion of the body
15
Q
Perfusion
A
- Refers to the process of delivering blood to the body’s tissues and organs.
- Requires enough blood volume and heart and vessels
16
Q
Compensation Mechanism
A
- decreased blood volume = decreased stroke volume and decreased cardiac output
- increase the heart heart tachycardia and tachypnoea + vasoconstriction
17
Q
Things that influence blood pressure
A
- Obesity
- Exercise
- Stress/Anxiety/Fear
- Diabetes
